Add Drupal 11 support. Drop Drupal 9 support. Require at least Drupal 10.2.

composer.json

@@ -5,7 +5,6 @@
   "keywords": ["Drupal"],
   "minimum-stability": "dev",
   "require": {
-    "drupal/core": "^9 || ^10",
-    "php": ">=8.1"
+    "drupal/core": "^10.2 || ^11"
   }
 }

jsonapi_reference.info.yml

 name: 'JSON:API Reference'
 type: module
 description: 'Provides a field for referencing remote data elements via JSON:API'
-core_version_requirement: ^9 || ^10
+core_version_requirement: ^10.2 || ^11
 package: 'Field types'
 configure: jsonapi_reference.json_api_reference_config_form

src/Plugin/Field/FieldType/TypedResourceObjectItem.php

@@ -19,7 +19,7 @@ use Drupal\jsonapi_reference\JsonApiClientInterface;
  *   id = "typed_resource_object",
  *   label = @Translation("Typed resource object"),
  *   description = @Translation("Field to represent a resource object in a remote system with a specific type."),
- *   category = @Translation("Reference"),
+ *   category = "reference",
  *   default_formatter = "typed_resource_object_string",
  *   default_widget = "typed_resource_object_autocomplete"
  * )